U.S. patent application number 12/066729 was filed with the patent office on 2009-07-30 for system for treating residual water.
This patent application is currently assigned to Sansuy S/A Industria de Plasticos. Invention is credited to Julia Takako Honda, Takeshi Honda.
Application Number | 20090188850 12/066729 |
Document ID | / |
Family ID | 36046402 |
Filed Date | 2009-07-30 |
United States Patent
Application |
20090188850 |
Kind Code |
A1 |
Honda; Takeshi ; et
al. |
July 30, 2009 |
SYSTEM FOR TREATING RESIDUAL WATER
Abstract
Improvements on a system for treating residual water, presents a
new solution for the conformation of a system for treating residual
water and for such purpose, it basically consists of a lower
blanket (1), preferably produced in PVC, and of a cover blanket
(2), which is also preferably produced in PVC, in any color, which
may be double-faced, including, in the present model still features
a reactor (3), a deep chamber (4) and an anaerobic pond (5), and
such elements may be excavated in the soil (S) or made of
stonemasonry or any kind of suitable material for this purpose.
Inventors: |
Honda; Takeshi; (Sao Paulo,
BR) ; Honda; Julia Takako; (Sao Paulo, BR) |
Correspondence
Address: |
MCCORMICK, PAULDING & HUBER LLP
CITY PLACE II, 185 ASYLUM STREET
HARTFORD
CT
06103
US
|
Assignee: |
Sansuy S/A Industria de
Plasticos
Camacari
BR
|
Family ID: |
36046402 |
Appl. No.: |
12/066729 |
Filed: |
November 8, 2005 |
PCT Filed: |
November 8, 2005 |
PCT NO: |
PCT/BR2005/000229 |
371 Date: |
December 30, 2008 |
Current U.S.
Class: |
210/150 ;
210/170.03 |
Current CPC
Class: |
Y02W 10/20 20150501;
C02F 2103/20 20130101; C02F 3/28 20130101; C02F 2303/02 20130101;
C02F 2103/005 20130101; Y02E 50/30 20130101; Y02E 50/343 20130101;
Y02W 10/23 20150501; C02F 11/04 20130101 |
Class at
Publication: |
210/150 ;
210/170.03 |
International
Class: |
C02F 1/00 20060101
C02F001/00; B01D 33/82 20060101 B01D033/82 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 27, 2005 |
BR |
MU8502055-9 |
Claims
1. A system for treating residual water characterized by being
conformed through excavation in the land, presenting three
segments, equipped with an anaerobic reactor, made with
conventional construction materials or molded in a slope in the
soil, such reactor consisting of a stonemasonry element, in the
central portion of which is foreseen a tubing, and in the lower
portion of which the inlet tubing is pointed and in the lower
portion passage tubes are foreseen and next to the stonemasonry
element conducting tubes are foreseen; such reactor may be built in
a slope, molded in the soil, such reactor being equipped with a
tubing, in the upper portion of which the inlet tubing is pointed
and in its lower portion passage tubes are foreseen, while next to
the slope conducting tubes are foreseen, such reactor being set up
in the deep chamber, which presents an anaerobic pond at a higher
plan, all the three segments in a single body covered by a blanket
and protected by a cover blanket; laterally, gutters are built,
which are used to anchor the lower and upper blankets providing the
sealing, by means of steel or wood bars and screws, welded in such
gutters, defining a water layer providing isolation and sealing;
while in the lower blanket, at least four openings are foreseen,
one in the frontal upper part for the inlet tubing passage of the
affluent, a second tubing in the frontal part for the treated
effluent outlet, a third lateral opening, and a fourth opening for
the passage of the tubes which are used to remove the excess of mud
generated in the reactor, whereas in such cover, which configures
the biogas reservoir, at least two openings are foreseen, the first
one for the installation of an outlet valve for the biogas and the
second one is a passage for a safety valve.
2. The system according to claim 1, wherein the fact that on such
cover different openings and passages may be conformed as well in
the land cover blanket.
3. A water treatment system comprising: an anaerobic chamber formed
from polymeric sheet, and adapted to receive water to be treated,
and from which chamber treated water is discharged; a lower
polymeric sheet provided as a blanket in an excavation shaped to
define a reactor depression in a lower part of said chamber; a
bio-digestive reactor in said depression for treating the
fermentables in the water and generating bio-gasses; a cover sheet,
also polymeric, and said sheets having overlapping peripheries
clamped together to trap pressure from these gasses; inlet and
outlet tubing for the intake of water to be treated and for the
exit of treated water.
4. The water treatment system of claim 3, further characterized by
sealing means at said clamped peripheries, said sealing means
comprising a trough surrounding said chamber, and adapted to
contain water of sufficient depth to cover said overlapped
peripheral edges of said polymeric sheets.
5. The water treatment system of claim 3, further including means
for tapping these pressurized bio-gasses for fuel or other
purpose.
6. The water treatment system of claim 3, wherein said polymeric
sheet comprises polyvinyl chloride (PVC).
7. The water treatment system of claim 4, wherein said water filled
trough also serves to anchor said peripheral sheet edges and
restrain said cover sheet from moving due to the pressure exerted
thereon by said bio-gasses.
8. The water treatment system of claim 3, further including at
least one additional depression defined in said chamber lower part
alongside said reactor depression.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application is entitled to the benefit of and
incorporates by reference essential subject matter disclosed in
International Patent Application No. PCT/BR2005/000229 filed on
Nov. 8, 2005 and Brazilian Patent Application No. MU8502055-9 filed
Sep. 27, 2005.
PURPOSE OF THE INVENTION
[0002] Improvement on a system for treating residual water brings a
new and less cumbersome solution for the erection of a system
capable of treating industrial, agro-industrial and domestic
residual water from very inexpensive components that are readily
assembled on a site requiring minimal excavation.
FIELD OF THE INVENTION
[0003] The present disclosure relates to systems for treating
residual water with organic matter, which is produced in the
effluents of industries, agro-industries, commercial businesses and
residences, enabling the capture of biogas. The system allows the
stabilization of the organic matter found in the residual water,
therefore reducing the organic load, providing the production and
collection of biogas, which is a fuel gas and can be used for
several purposes. As it is an anaerobic environment, the system is
close, isolating the residual water from human and animal contact,
presenting efficiency to reduce organic load, diminishing odors and
the incidence of flies, avoiding the emission of methane to the
atmosphere, reducing the number of fecal residues and enabling
economic added value through the appropriate use of biogas. In
short, the system can be used to improve the environmental quality,
with the possibility of adding economic value besides the
environmental gain.
BACKGROUND OF THE INVENTION
[0004] The generation of residual water in industrial and
agro-industrial processes as well as in commercial businesses and
residences is something worrisome when the issue is analyzed
through the environmental aspects involved.
[0005] Residual water essentially consists of the community supply
water, after having served a variety of uses and may be defined as
a combination of liquids or water transporting residues removed
from residences, commercial and industrial businesses, several
institutions and, in the rural environment, animal facilities,
agro-industries, etc.
[0006] If the residual water is accumulated, the decomposition of
organic material may lead to the production of big quantities of
smelly gases. In addition to this, untreated residual water usually
contains numerous pathogenic microorganisms which inhabit the human
or animal intestinal tract, or which may be present in certain
industrial residues. Residual water also contains nutrients that
can stimulate the growth of aquatic plants but they can also
contain toxic components. Therefore, the immediate removal of
residual water from the generating sources, followed by its
treatment and disposition is not only desirable but it is also
necessary in a society concerned about health issues.
[0007] The spill of residual water without a previous treatment has
been causing the contamination of the soil, as well as superficial
and subterraneous water, being a hazard to public health and
bringing different damage and discomfort to human beings and
animals besides the emission of gases that affect the whole
environment and the quality of life.
[0008] Biodigestors and the anaerobic ponds are facilities aiming
to provide the physical storage of organic dejects in which the
biochemical transformations related to the anaerobic biodigestion
process of the organic fraction contained in residual water take
place. The bacteria and the methanogenic Archaea are the main cause
for the organic fraction degradation and, in the anaerobic
processes biogas is produced, which consists mainly of methane. The
anaerobic systems cater for a number of residues with organic
characteristics found both in the urban and rural environments,
making them an important option for the treatment and stabilization
of organic matter and for generating biogas.
[0009] This gas can be used in direct combustion or as fuel for
alternative motors, to generate electrical power or for several
kinds of equipment used in water and gas heating and cooling.
[0010] Several types of systems for the suitable treatment of
residual water have been created. However, due to the volumes
generated, the high costs make it difficult for the systems to be
applied on a large scale.
SUMMARY OF THE INVENTION
[0011] Hence, the objectives of the present model are very clear,
that is to say, to present an anaerobic digestion system, coupling
a biodigestor with an anaerobic pond in a single body, the
construction of which should be simplified in relation to the
biodigestors for residual water and ponds conventionally used, as
well as providing a treatment system that may be more accessible,
enabling its application on any scale and for any volume of
residual water and with the possible use of the energetic potential
contained in this water.
[0012] Within this scope, the present coupled anaerobic system has
as its main characteristic the use of a biodigestor inserted in a
pond, made of simple parts, with an easy execution, involving a few
elements of stonemasonry, presenting the flexible PVC blankets as
its main constructive material, making its construction simpler and
quicker, as well allowing its assembly and disassembly.
[0013] Each anaerobic coupled system has three different segments
in its interior. The residual water will enter through the front
part, which is deeper, in a central compartment, (reactor), which
will contain the mud and will allow an ascending flow. The central
compartment has its volume dimensioned according to the desired
time of hydraulic retention, which should be compatible with the
organic load of the water to be treated in the system. When coming
out of the central compartment in a descending movement through
rigid PVC tubes, the water will reach the bottom of the front part
of the compartment still deep so that the mud dragged from the
central part can be decanted. When leaving the frontal
compartments, more deeply, the water will flow horizontally in the
rear compartment, which is used for stabilization, allowing the
outflow from the system in the right conditions for the final
disposition of the water in the soil or to complement the
treatment, depending on the regulations.
[0014] The proposed system's main elements are biodigestors which
are simple to build, some elements of stonemasonry, inlet box and
gutters, tubes of rigid plastic and reservoir made of flexible PVC
for the reception and storage of the biofertilizer. Therefore, the
basic conformation consists of basic flexible PVC blankets, with
three fermentation chambers (reactor, 30 deeper pond and anaerobic
pond) and the gas meter, the blankets being suitably anchored in
the gutters to form the biodigestors without the use of expensive
structural elements
[0015] Therefore, the present model has the advantage of a simple
construction, as it can be built in any place, with a simplified
installation procedure that does not require specialized workers,
can be disassembled, besides having a low cost when compared to the
existing models, contributing to the conservation of the
environment and protecting both human and animal health.
[0016] The biodigestors will basically consist of two pyramid
trunks excavated in the soil, but to meet the requested needs,
according to the availability of constructive materials, two
variables may be adopted to build the reactor in the front part. In
the first possibility, the construction of the reactor can be made
of materials such as steel, stonemasonry, solid bricks and blocks,
pre-molded concrete tubes and rigid PVC. In the second variable,
the reactor located in the front part, will be molded in the soil
during the excavation, and in both cases, a finishing with flexible
PVC blankets will be made.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Hence, to better clarify the patent proposed above, a
detailed description of such model will be presented below, with
illustrations in the attached drawing sheets in which:
[0018] FIG. 1 shows a low plan illustrating the system (one of the
biodigestors without the cover), detailing the disposition of the
three fermentation chambers: reactor built with several materials,
deep chamber and anaerobic pond;
[0019] FIG. 2 shows a lateral view according to section A-A of the
previous drawing, detailing the disposition of the three
fermentation chambers;
[0020] FIG. 3 shows another lateral view, illustrating the
biodigestor according to section B-B, illustrated in drawing 1;
[0021] FIG. 4 shows a low plan of the system (one of the
biodigestors without the cover) detailing the disposition of the
three fermentation chambers with the reactor molded in the
soil;
[0022] FIG. 5 shows a lateral view, according to cut C-C of the
previous drawing, detailing the disposition of the three
fermentation chambers;
[0023] FIG. 6 shows another lateral view, illustrating the
biodigestor, according to cut D-D illustrated in drawing 4;
[0024] FIG. 7 shows the detailing of the upper and lower PVC
blanket anchorage system in the gutters;
[0025] FIG. 8 shows the detailing of the biogas network outlet, and
the;
[0026] FIG. 9 shows a view like the previous one, illustrating the
safety valve in the biogas network.
DETAILED DESCRIPTION OF THE INVENTION
[0027] Thus, the improvement on a system for treating residual
water is basically conformed by a lower blanket (1), preferably
produced with PVC, and by a cover blanket (2), which is also
preferably produced with PVC of any color, which can also be
double-faced.
[0028] The present model also features a reactor (3), a deep
chamber (4) and an anaerobic pond (5), and such elements may be
excavated in the soil (S) or can be built in stonemasonry or with
other type of suitable material for this purpose.
[0029] The referred to blanket (1) is applied to cover a hole
excavated in the soil with variable dimensions, according to the
project, and shutters are built alongside this hole (6), which will
be used to anchor the lower (1) and upper blankets (2), also used
to provide sealing to the fermenting substratum and the biogas.
[0030] In the lower blanket (1), applied on the walls of such hole,
at least four openings are foreseen, one in the frontal upper part
for the inlet tube (7) of the affluent (A), another opening in the
rear part for the outlet tube (8) of the treated effluent (E) and a
third opening (9), alongside the biodigestor, for handling the
fermenting substratum and a fourth opening for the passage of the
tubes which are used to remove the excess of mud generated in the
reactor (3).
[0031] The reactor (3) may consist of an element made of
stonemasonry (10), equipped with a central tube (11), in the upper
portion of which is located the inlet tube (7). In the lower part
of such tubing (11) passage tubes are foreseen (12) arranged in
radial manner, while close to such stonemasonry element (10) other
conducting tubes are foreseen (13) which lead the residual water
out of the reactor (3) to the lower portion of the deep chamber
(4).
[0032] In a different embodiment of such reactor (3), a slope
reactor can be foreseen (3'), made in the soil (S), and in its
center a tubing is foreseen (14), in the upper portion of which
there is the inlet tube (7). In the lower portion of such tubing
(14) passage tubes are foreseen (15) and in the upper portion of
such slope (3') conducting tubes are also foreseen (16) which lead
the residual water to the lower portion of the deep chamber
(4).
[0033] The lower blanket (1) and the cover (2), are dully attached
by means of steel or wooden bars and screws (17), which are welded
to such gutters (6), defining a water layer (D) which allows the
isolation and sealing, of both the fermenting substratum and the
biogas.
[0034] In such cover (2), at least two openings are foreseen; the
first one for the installation of an outlet valve (18) for the
biogas and the other is a passage for the biogas safety valve (19).
Such outlet valve (18) consists of a box (20), in which a pebble
bottom is deposited (C), while the outlet is conformed by the
tubing itself. The safety valve (19) consists of a box (21), in
which a certain water volume is foreseen and the tubing is immerse
in the liquid.
[0035] The cover (2) configures the gas meter, which becomes
inflated with the biogas formation and is used to store such
gas.
[0036] Therefore, as it has been described, it can be noted that
the improvement on a system for treating residual water, can be
characterized as a patent as it presented the conformation of a
system that is practical, efficient and cheaper than the existing
ones, combining and modifying familiar elements in a new
arrangement of improved details besides being perfectly feasible
for the application in the treatment of residual water generated in
several sectors of industry, agro-industry, commerce and
residences.
* * * * *